Details are emerging about the upcoming fourth season of “Pretty Little Liars” — and the new spin-off series, “Ravenswood.”

We just found out that Tyler Blackburn, a.k.a. Caleb Rivers on PLL, is headed to the spin-off. While we don’t know exactly how he gets there, creator Marlene King tweets that they have “huge plans” for Caleb in Ravenswood.

And PLL writer Joseph Dougherty, when asked if Caleb is leaving PLL for good, writes, “There’s plenty of Caleb to go around, but he’s the only one who can unlock the secrets of Ravenswood.”

Along the way, as ABC Family tells Zap2it that even though “Ravenswood” is premiering at Halloween, “a few teases may come in the summer season.”

Now we know one of those teases.

Troian Bellisario tells ET, “I know Toby and Spencer are going to Ravenswood in the episode we’re filming next week! I’m excited to see what that’s going to turn out because it’s already pretty crazy in the script.”

She adds, “All these new characters that are going to be introduced into the vocabulary. I’m excited to explore what those storylines are going to weave into ours.”

Speaking of Halloween, PLL designer Fred Andrews teases, “It is the biggest Halloween yet! Very secret stuff this year! I promise it will knock your socks off!”

Finally, Marlene King has posted the below photo to Instagram with the caption, “Hmmm.” Do you think it’s PLL-related? Or Rwood? We’re going with “Ravenswood.”

“Pretty Little Liars” returns June 11 on ABC Family. Are you getting excited?

ravenswood old photo 'Pretty Little Liars' Season 4: Spencer and Toby heading to 'Ravenswood'

Posted by:Andrea Reiher

TV critic by way of law school, Andrea Reiher enjoys everything from highbrow drama to clever comedy to the best reality TV has to offer. Her TV heroes include CJ Cregg, Spencer Hastings, Diane Lockhart, Juliet O'Hara and Buffy Summers. TV words to live by: "I'm a slayer, ask me how."